Pulling implement



July 7, 1931. v 1 HAUBERT 1,813,447

PULLING IMPLEMENT lJfy-d a2 1 f I I ATTORNEYS July 7, 1931.

l.. HAUBERT 1,813,447

PULLING IMPLEMENT Filed Aug. '10. 1928 2 SheetsSheet .2

INVENTOR ATTORNEYS Patented July 7, 1931 UNITED STATES vP'IENE -einer.

VLEO HAUBER, OF TULSA, KLAHOM Pnt-Line rrrrnninnnr Application. filledAugustv 1.0,' 1928. Serial No.' 238,780.

This invention relates to pulling. implements andaims, amongotherobjects, to provide an improved manually operable power pulley adaptedto tighten chains and stretch Wire fencing and the like.l v

In the accompanying drawings,

Fig. 1 is a fragmentary side elevationfof a chain tightening implementembodying vation, showing the operating member in another position;

Fig. 6 is a top plan view of 5; Fig. 7 is a sectional view taken on theline 7 7 of Fig. 6; and i y Fig. 8 is a fragmentary side elevation ofthe frame. v l

Referring particularly to the drawings, the embodiment of the inventionthere shown comprises a sheave block of the chain-tightener type adaptedto be operated manually by ratchet mechanism soy that the device may beemployed to tighten load binding chains or stretch wire fencing and thelike by taking a series of take-up bites on a chain to be tightened.

Herein, there is provided an elongated `U-shaped frame 10 which may bemade in a singlecasting and a chain hook 11 is'swivelly connected to oneclosed end wall, the

idea being to connect the swivel hook tou one end of a load bindingchain or to a fixed member. Between the sides of the frame a ratchetoperated sheave 12 in the form of a grooved casting having integralratchet vwheels 13 is mounted on a transverse shaft Y or axle 14 whichis conveniently gro-oved as at 15 (Figs. 5 and 6) and held in slots 16in the sides. The shaft is preferably held in place by bent or curvedarms 17 on opposite sides of the slots over` the axle (Fig. 8) so thatit cannot fallout.

tightened as much: as isy desired.

The sheave 12 ishere shown -as being grooved and so lshaped as toreceive and guide the links vof a tightening chain l18 having one endsecured to a cross pin 19 between the/ratchet wheels, Vthe edgewiselinks Working in the sheave groove Aand the lfiatwise linksl lying on:flat facesor shoulders .20 provided. between the groove and theyratchet wheels 13. These faces'are shown as being shaped to receive theiiatwise links when they are wound on the sheave practically onerevolution.

The free end of the tightening chain has a chain hook 21 adapted toengage the links of achain tov be tightened (not v shown) whether or notthat chain binds a load or is fastened to something else to be stretchedor tightened, the idea being to take several bites in the operation ofthe implement. To operate the ratchet wheels, a forked'() ratchet lever22 is shown as being pivotally mounted on projecting ends ofthe shaft14.

VTo this lever. an operating handle 23 is secured to enable a 'powerfulleverage tofbeM obtained. `Operating pawls or angular pro-75 jections 24are formed on the opposed-forks to engage the teeth of the ratchetwheels and the ends ofthe forks have curved slots 25 around the shaft14; to permit the pawls or projections to be disengaged from the soratchet teeth and take another hold by working the lever handle.vrl`hese slots have seats at their ends for the shaft and angularshoulders 26 between them' to prevent the p lever from beingaccidentally dislodged a5 when in either position, shown in Figs. 1 and5. f

A forked, springnrged holdingpawl 27, is shown as being pivotallymountedbe-` tween the sidewalls of the frame at the rear end (Figs. 1, 2and 6), and is adapted to hold both ratchet wheels while the handle 28is being manipulated and after the tightening chain has done itswork,'as for eX- ample, after a loadrbinding chain has been This pawl isshown as having a side arm or handle 28 (Fig. 1) so that it can bedisengaged 'by hand, without inserting the lingers in a dangerousposition.. I

Herein, the ratchet lever 22 is constructed and arranged to engage theholding paWl and lock it either in engagement or disengagement with theratchet Wheels, a suitable spring arm 29 having a rounded projection orknob 30 being shown on the paWl and the rear end of the fork beingadapted to engage the shoulder or knob, as shown in Figs. 1 and 2. Thispermits the lever to be pushed down over the pawl and thereby preventthe paWl from being accidentally disengaged. Also, the lever may be usedto hold the holding paWl out of engagement With the ratchet Wheels Whenthe tightening chain is being pulled out to take a new bite or hold (seeFig. 2),

To enable the tightening chain to take a series of bites on a chain tobe tightened, a chain holding or take-up hook 3l is shown as being castintegral With the frame 10 at one side. After the ratchetwvheels havebeen turned about one revolution (Fig. 5), or when the chain is Wound onthe sheave, a

link in the slack end portion of the tightened chain (not shown) may beslipped into this hook` Then another bite can be taken by unwinding thetightening chain and repeating the operation.

From the foregoing description, it is believed that the operation of theimproved pulling implement is clear and that various uses thereof Willbe obvious to those skilled in the art. It Will be observed that it ismade of a relatively feW simple parts, the principal ones of which maybe cast metal. Moreover, it is very easy to manipulate.

Obviously, the present invention is not restricted tothe particularembodiment thereof herein shown and described. Moreover, it is notindispensable that all the features of the invention be used conjointly,since they may be employed advantageously in va.- rous combinations andsub-combinations.

l. VJhat I claim is l. A pulling implement of the class describedcomprising, in combination, an open frame a chain Winding sheaverotatably mounted in said frame; a shaft for said sheave; a pair ofratchet Wheels on the sheave; holding-pawls pivoted on the frame andcooperating With the ratchet Wheels; a forked ratchet lever memberhaving its ends pivotally mounted on the shaft of said sheave; andoperating paWls on the lever member, said forks having curved slotscooperating With the sheave shaft to permit the operating paWls to bedisengaged from the ratchet Wheels.

2. A pulling implement of the class described comprising, incombination, a frame; a ratchet operated sheave in the frame; a forkedholding paWl cooperating with the ratchet pivoted to the frame; avratchet lever havingan integral operating pawl cooperating with saidratchet; and integral means on the lever engageable With the holdingpawl to hold said pawl out of engagement with the ratchet and permit thesheave to be rotated freely.

8. `A pulling implement of the class described comprising, incombination, a frame; a ratchet operated sheave in the frame; a forkedholding pawl cooperating With the ratchet and mounted in the frame; aratchet lever having an integral operating paWl cooperating with saidratchet; and a spring member on the holding pawl engageable With thelever to lock the paWl in holding engagement With the ratchet to preventaccidental disengagement of the holding pawl from the ratchet.

et. A pulling implement, of the class described comprising, incombination, a frame; a ratchet operated sheave in the frame; a holdingpaWl cooperating With the ratchet and mounted in the frame; a ratchetlever having an integral operating paWl cooperating with said ratchet;means on the lever engageable with the holding pawl tohold said pawl outof engagement with the ratchet; and a spring member on the holding -paWladapted to be` engaged by the ratchetv lever either to lock the pawl inengagement or out of engagement with the ratchet Wheel.

5. A pulling implement of the class described comprising, incombination, an open substantially U-shaped frame; a chain Windingsheave rotatably mounted in said frame;

a shaft for vsaid sheave; a pair of ratchet Wheels on the sheave;holding paWls .for the ratchet Wheels mounted on the frame; a forkedratchet lever member having its ends pivotally mounted on the shaft ofsaid sheave; operating pawls on the lever member, said forks on theratchet lever having curved slots providing a shiftable connectionbetween the leverV and the sheave shaft to permit the operating pavvlsto be disengaged from the ratchet Wheels; and said ratchet lever havingshoulder portions intermediate the ends of the slots to prevent theoperating paWl on the lever from accidentally slipping out of theratchet teeth While being operated.

In testimony, that I claim the foregoing as my own, I have heretoaffixed my signa- LEO HAUBERT.

v ture.

